Finding the Fourth Proportional to 2,003.78, 3,010.03 and 1,938.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,003.78 : 3,010.03 = 1,938.17 : x
2. Step 2: Convert to fraction form
   2,003.78/3,010.03 = 1,938.17/x
3. Step 3: Cross multiply
   2,003.78x = 3,010.03 × 1,938.17
4. Step 4: Simplify right side
   2,003.78x = 5,833,952.52
5. Step 5: Solve for x
   x = 5,833,952.52/2,003.78
6. Step 6: Final answer
   x = 2,911.47